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AM4964 document number: ds37241 r ev. 2 - 2 1 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product single phase full wave direct pwm motor driver description the am496 4 is highly integrated feature rich single phase brushless direct current (bldc) full wave motor driver with combined pwm and temperature speed control function for fans, blowers and extractors. for system flexibility , the motor speed can be controlled b y an external pwm signal and temperature sensed by therm al resister at the same time . based on external input pwm and temperature signal s , the am496 4 adjust s the output pwm duty cycle. i f the input pwm duty is constant, the output pwm duty varie s with temperature sensed by therm al resister sensor between the low and high temperature corners . i f the temperature signal is constant, the output duty varie s with the external input pwm duty. t he low and high temperature corners and the output pwm duty gap bet ween these temperature corners are adjustable to help protect the motor coil, the am496 4 provides a rotor lock protection which shuts down the output if rotor lock is detected. the device automatically re - starts when the rotor lock is removed. am496 4 provides a tachometer outpu t frequency generator (fg). the fg output is the magnetic change frequency. the AM4964 is available in tssop - 20ep package. features ? flexible speed control options ? combined pwm+thermistor s peed c ontrol ? pwm s peed c ontrol ? dc voltage speed control ? adjustable low and high temperature corners ? full speed when thermal resistor is shorted ? adjustable output duty gap between high and low temperature when 100% pwm input ? built - in oscillator C no external capacitor ? built - in minimal speed setup circuit ? alpha slope adjustable ? rotation speed indicator (fg) ? built - in temperature control circuit ? built - in thermal shutdown circuit ? lock protection and auto - restart ? totally lead - free & fully rohs compliant (note s 1 & 2) ? halogen and antimony free. green device (note 3) pin assignments (top view) tssop - 20ep applications ? cpu cooler fan in pc ? brushless dc motor driver note s: 1 . no purposely added lead. fully eu directive 2002/95/ec (rohs) & 2011/65/eu (rohs 2) compliant. 2. see http://www.diodes.com/quality/lead_free.html for more information about diodes incorporateds definitions of hal ogen - and antimony - free, "green" and lead - f ree . 3. halogen - and antimony - free "green products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total br + cl) and <1000ppm antimony compounds . n c p g n d o u t 2 v c c v m i n p w m c f f g r t t l i n + h b i n - r a d j c t s g n d t h t a o u t 1 n c 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 e x p o s e d p a d
AM4964 document number: ds37241 r ev. 2 - 2 2 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product typical applications circuit o u t 2 o u t 1 v c c c t v m i n r a d j p w m i n - c f f g i n + r t t h h a l l a m 4 9 6 4 d 1 c 1 1 ? f r 2 v c c l 1 c 3 1 ? f 0 . 4 7 ? f 3 r 3 r 4 v + r 5 r 6 v + 4 5 6 7 8 9 1 1 1 3 1 4 1 5 1 7 1 8 r 1 r t c 2 r 9 s g n d 1 6 h b r 7 d 2 p g n d n c n c t a 1 2 1 0 r 8 t l 1 2 1 9 d 3 2 0
AM4964 document number: ds37241 r ev. 2 - 2 3 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product pin description s pin number pin name function 1,20 nc no t connected 2 pgnd power ground 3 out2 fan driver output2 4 vcc power supply 5 vmin minimum speed setting pin 6 pwm pwm pulse input terminal 7 cf filter capacitor 8 fg fg signal output 9 rt rt signal output 10 tl low temperature set resistor 11 in+ hall sensor input+ 12 hb hall bias voltage 13 in - hall sensor input - 14 radj output pulse duty/input pulse duty adjustable terminal 15 ct lock protect and auto start 16 sgnd signal ground 17 th high temperature set resistor 18 ta output duty gap adjust pin between low and high temperature at 100% input duty 19 out1 fan driver output1 exposed pad c entral exposed pad C
AM4964 document number: ds37241 r ev. 2 - 2 4 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product functional block diagram truth table items in - in+ cf ct out1 out2 fg mode 1 h l l l h l l rotation 2 l h l h off pwm off 3 h l h off l l rotation recirculation 4 l h l off off pwm off 5 h l l h h off l lock protection 6 l h off h off t h e r m a l s h u t d o w n c o n t r o l c i r c u i t t r i a n g l e w a v e v c c r a d j v m i n p w m c f o u t 1 o u t 2 f g 3 p r e - d r i v e r v + 4 5 6 7 8 9 1 4 1 9 v + v + v + v + 1 0 4 k 4 2 k 9 0 k 5 4 k 5 1 k 5 6 k 9 3 k 1 8 k 1 7 k r t t l 1 0 t h 1 7 v r e g l o c k s h u t d o w n a n d a u t o r e s t a r t h y s t e r e s i s a m p c t i n + i n - p g n d 1 1 1 3 1 5 2 t a 1 . 2 5 v h b 1 8 1 2 s g n d 1 6
AM4964 document number: ds37241 r ev. 2 - 2 5 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product absolute maximum ratings ( note 4 ) ( @ t a = +25c, unless otherwise specified.) symbol parameter rating unit v cc supply voltage 18 v i out output current 1.0 a v out output voltage 18 v v fg fg output voltage 18 v i fg fg output current 10 ma p d power dissipation 1.1 w t stg storage temperature range - 55 to + 150 c ? ja thermal resistance (junction to ambient) (note 5) 114 c/w esd esd (human body model) 3000 v esd esd (machine model) 300 v note s: 4. stresses greater than those listed under absolute maximum ratings may cause permanent damage to the device. these are st ress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. exposure to absolute maximum ratings for extended periods may affect device reliability 5. tssop - 20ep exposed pad is soldered to minimum recommended landing pads (see package outline dimension section) on a 4.0mm x 3.0mm two - layer 2oz.copper fr4 pcb (1.6mm thickness) with four thermal vias in the exposed pad to the copper flood on the bottom layer. see thermal de - rating curves in th e thermal performance section. recommended operating conditions symbol parameter min typ max unit v cc supply voltage 3.5 12 16 v v in+ hall input voltage + 0.2 C 3 v v in - hall input voltage - 0.2 C 3 v t a ambient temperature - 30 C + 90 c
AM4964 document number: ds37241 r ev. 2 - 2 6 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product electrical characteristics (@v cc = 12 v, t a = + 25c, unless otherwise specified.) symbol parameter conditions min typ max unit i q1 quiescent current v ct =l 10. 15 15 18.75 ma i q2 v ct =h 5. 35 8 10.5 v sath output saturation voltage at high side i source =200ma C satl output saturation voltage at low side i sink =200ma C pwm cpwm frequency C cpwmh cpwm high level voltage C C cpwml cpwm low level voltage C C cfh1 cf high level voltage C C cfh2 C C cfl1 cf low level voltage C C cfl2 C C adj1 radj pin voltage C C adj2 C C min vmin voltage C C hb bias C C hys hall input hysteresis C C cth ct high level voltage C ctl ct low level voltage C chg ct charge current C dhg ct discharge current C cd ct charge and discharge ratio i chg /i dhg 8.5 10 14.5 C fgl fg output low level voltage i fg =5ma C lfg fg leakage current v fg =7v C C
AM4964 document number: ds37241 r ev. 2 - 2 7 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product functional description s hb C hall bias output this is a 1.25v nominal voltage source to bias a differential un - buffered hall element sensor. if a hall element requires a lower voltage than the h - bias output, connect an appropriate value resistor between the hb pin and the hall element supply pin. in+ and in - C hall inputs the rotor position is detected by a hall sensor, with the output applied to the in+ and in - p ins. this sensor can be either a 4 pin 'naked' hall device or of the 3 - pin b uffered switching type. for a 4 - pin device the differential h all output signal is connected to the in+ and in - pins. for a buffered hall sensor the hall device output is attached to the in+ pin, with a pull - up attached if needed, whilst the in - pin has an external potential divider attached to hold the pin at half v ref . when in+ is high in relation to in - , out2 is the active drive. pwm C pulse w idth m odulate s ignal i nput p in the pwm signal is applied at this pin and then be translated to be stable voltage to control the motors rotate speed. tl C l ow temperature c orner s et p in a resistor (r8) is connected between tl and ground to adjust the l ow corner temperature . low temperature corner v alue vs . r8 resistor v alue 5 6 7 8 9 10 24 26 28 30 32 34 36 38 40 low corner temperature ( o c) r8 (k ? ) r t =tsm2a103f39h1rz
AM4964 document number: ds37241 r ev. 2 - 2 8 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product functional description s (cont.) th C h igh temperature c orner s et p in a resistor (r 9 ) is connected between t h and ground to adjust the high corner temperature . h igh corner temperature can be estimated by : t h =t l +5*r 9 /100 . h igh temperature c orner vs. r9 t a C output duty gap adjust between high and low temperature corners when input duty is 100% a resistor (r7) is connected between ta and ground to adjust the o utput pwm duty g ap between h igh t emperature and l ow t emperature corners w hen the external i nput pwm d uty is 100% . output pwm duty vs. r7 40 60 80 100 120 140 160 180 200 220 240 32 34 36 38 40 42 input duty cycle=100% high corner temperature ( o c) r9 (k ? ) 0 100 200 300 400 500 600 700 800 900 1000 0 20 40 60 80 100 low temperature high temperature the gap between low and high temperature r7 (k ? ) output duty cycle (%)
AM4964 document number: ds37241 r ev. 2 - 2 9 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product functional description s (cont.) cf C cf capacitor pin a capacitor is connected to this pin as a filter to translate pwm signal to be stable voltage . the r esistors r3 and r4 are connected to cf pin to adjust the maxi m um sp eed at high temperature and low temperature co rners. adjust the maximum speed vs. input duty to approximately match the target specification using r3 and r4 at low temperature (tth, v8> v7+0.7v) . o utput pwm d uty vs . r3 and r4 at h igh t emperature 0 20 40 60 80 100 0 20 40 60 80 100 r3=360k ? r3=1m ? r3 open output duty (%) input duty (%) 0 20 40 60 80 100 0 20 40 60 80 100 r3=360k ? r3=1m ? r3 open output duty (%) input duty (%) 0 20 40 60 80 100 0 20 40 60 80 100 r4=150k ? r4=390k ? r4 open output duty (%) input duty (%) 0 20 40 60 80 100 0 20 40 60 80 100 r4=150k ? r4=390k ? r4 open output duty (%) input duty (%)
AM4964 document number: ds37241 r ev. 2 - 2 10 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product functional description s (cont.) radj C adjust the l ine s lope of the i nput pwm d uty vs. o utput pwm d uty at the o ut1 and o ut2 adjust slope k of the fan rotating speed or output dut y vs. input duty to approximately match the target specification using r5 and r6 . out p ut pwm duty slope k vs . input pwm duty with s lope k r 5 and r6 vmin C minimum speed setting a voltage can be set on this pin via a potential divider between the vref (or supply) and gnd pins. this voltage is monitored by the pwm pin to clamp the pwm control voltage so that it does not rise above vmin voltage. as a higher voltage on the pwm pin represents a lower speed, the vmin setti ng prevents the motor speed going lower than the minimum speed set by the vmin pin. when the vmin voltage is higher than the lowest speed setting voltage allowed (the lowest speed voltage is about 0.28v cc ), the fan speed is maintained a t the lowest speed. adjust the minimum speed vs. input duty to approximately match the target specification via r2 (r1=1 5k ). measure the fan rotating spee d and the input duty, as shown b elow . output pwm duty vs . r2 0 1 2 3 4 5 6 7 8 9 10 0 20 40 60 80 100 output duty cycle (%) r2 (k ? ) 0 10 20 30 40 50 60 70 80 90 100 0 20 40 60 80 100 r5=100k ? r5=270k ? r5 is open output duty cycle (%) input duty (%) 0 20 40 60 80 100 0 20 40 60 80 100 r6=100k ? r6=270k ? r6 open output duty (%) input duty (%)
AM4964 document number: ds37241 r ev. 2 - 2 11 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product functional description s (cont.) ct C locked rotor timing capacitor the ct pin will have a capacitor connected to ground. it is a multi - function pin providing timing for the lock detect and auto - restart. different rates of charge and discharge of ct capacitor depending on the mode of operation (fan operation status) give t he lock - detect time ( t lckdet ) and lock time ( t off ) before the next auto - start retry. when the motor is running, the capacitor is discharged at every hall signal change. ct pin provides the timing for the locked rotor monitor. in normal operation, lock detect is enabled. if the hall signal does not change (i.e. a rotor lock condition) within the lock detect time ( t lckdet ), t he outputs are disabled. in this condition the mo tor will not be driven for a set time t off . this t off time depends on the external ct capacitor value and its internal discharge current (i dhg ) . after the t off period device enter s auto - restart phase to re - start the motor with a new lock detect time. if the motor has not turned to generate a transition on the hall inputs by the end of this t lckdet period, the motor re - enters motor lock t off period with the outputs disabled. if the hall signal change is detected, the motor is deemed as running and goes into lock - detection mode. the t lckdet and t off are determined by the value of the external capacitor on the ct pin and the internal charge and discharge curren ts during these ti me periods. the currents during t lckdet and t off are i chg , and i dhg respectively. fg C frequency generator (tachometer) output pin this is the frequency generator output and is a buffered signal from the hall sensor. this is an open collector drive giving an active pull down with the high level being provided by an external pull up resistor. o ut1 and o ut2 p in s o ut1 and out2 pins provide h bridge driver output for fan and motor coil connection. vcc C ic supply voltage this pin provides the supply for the device. gnd C supply return this is the device supply ground return pin for control signal. pgnd C p ower supply return this is the device supply ground return pin for power output pin s out1 and out2 and will generally be the most negative supply pin to the fan .
AM4964 document number: ds37241 r ev. 2 - 2 12 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product performance characteristics quiescent current vs. supply voltage quiescent current vs. a mbient temperature output saturation voltage vs. ouput current allowable power dissipation vs. allowable temperature (note 6) note 6 : tssop - 20ep exposed pad is soldered to minimum recommended landing pads (see package outline dimension section) on a 4.0mm x 3.0mm two - layer 2oz.copper fr4 pcb (1.6mm thickness) with four thermal vias in the exposed pad to the copper flood on the bottom layer. -50 0 50 100 0 4 8 12 16 20 v cc =12v i q1 (v ct =l) i q2 (v ct =h) quiescent current (ma) ambient temperature ( o c) 0 5 10 15 20 25 0 4 8 12 16 20 t a =25 o c i q1 (v ct =l) i q2 (v ct =h) quiescent current (ma) supply voltage (v) -20 0 20 40 60 80 100 0.0 0.2 0.4 0.6 0.8 1.0 1.2 allowable power dissipation (w) ambient temperature ( o c) 90 0 100 200 300 400 500 0.0 0.5 1.0 1.5 2.0 2.5 3.0 v cc =12v, t a =25 o c v sath v satl output saturation voltage (v) output current (ma)
AM4964 document number: ds37241 r ev. 2 - 2 13 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product applications note typical a pplication c ircuit for pwm input signal for speed control with AM4964 is shown below. the speed is primarily controlled by a voltage on the cf pin (either from dc voltage signal or pwm inputs signal converted to dc voltage). typical application circuit ( external pwm i nput s peed c ontrol ) note 7 : c1 is for power stabilization a nd should be 1 f or higher depend ing on the motor current and motor design. o u t 2 o u t 1 v c c c t v m i n r a d j p w m i n - c f f g i n + r t t h h a l l a m 4 9 6 4 d 1 c 1 1 ? f r 2 v c c l 1 c 3 1 ? f 0 . 4 7 ? f 3 r 3 r 4 v + r 5 r 6 v + 4 5 6 7 8 9 1 1 1 3 1 4 1 5 1 7 1 8 r 1 r t c 2 r 9 s g n d 1 6 h b r 7 d 2 p g n d n c n c t a 1 2 1 0 r 8 t l 1 2 1 9 d 3 2 0 n o t e 7
AM4964 document number: ds37241 r ev. 2 - 2 14 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product applications note (cont.) some of typical application performance curves based on circuits above are shown below (r1 to r6 open, r8=8k, r9=150k). output pwm duty vs. input pwm duty with r7 ( 180k ? ) output pwm duty vs. input pwm duty with r7 ( 390 k ? ) output pwm duty vs. temperature 24 26 28 30 32 34 36 38 40 42 44 46 0 20 40 60 80 100 output duty (%) temperature ( o c) r5=470k ? , r7=150k ? , r8=8.52k ? , r9=130k ? input duty 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% th tl 0 20 40 60 80 100 0 20 40 60 80 100 output duty gap (input duty=100%) low temperature high temperature output duty (%) input duty (%) r7=390k ? 0 20 40 60 80 100 0 20 40 60 80 100 output duty gap (input duty=100%) low temperature high temperature output duty gap(%) input duty (%) r7=180k ?
AM4964 document number: ds37241 r ev. 2 - 2 15 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product applications note (cont.) power supply stabilization the recommended operating voltage range for AM4964 is 3.5v to 16v. a decoupling capacitor c1 (which also acts as re - circulating capacitor at commutation) should be connected close to the vcc pin. c1 is for power stabilization and sh ould be 1 f or higher depending on the motor current and motor design. hall bias and hall input for commutation signal the hb pin provides a 1.25v hall bias voltage to drive hall element. the output of the hall elements or the hall switches is connect ed to hall input in+ and in - pin as described previously in functional description section. to avoid noise, the connection to the hall element or switch should be as short as possible. the hall input stage ( in+ and in - pin) has a hysteresis of 20mv typical . the differential hall input signal should be 50mv peak or higher . speed control the motor speed is governed by the output pwm duty of the h bridge. speed control the motor speed is governed by the output pwm duty of the h bridge. the voltage on the cf, vmin pin and the internal triangle wave voltage controls the output pwm duty and therefore the speed of the motor. when the cf voltage is smaller than vmin voltage, the output pwm duty is generated by comparing th e triangular voltage with cf . if the cf pin voltage is higher than the vmin pin, the speed is controlled by comparing th e triangular voltage with vmin voltage. when the pwm voltage is lower than the low side of the triangular voltage , the motor will run at full speed. see speed control and minimum speed setting figure. an input dc voltage from 3.6v to 1.9v (for 12v supply) on the cf pin controls the output pwm duty f ro m 0% to 100% thus allowing speed control from 0% to 100% of the full speed. t he dc voltage of cf can be adjusted by pwm input signal duty and the ambient temperature sensed by the thermistor ( resistive sensor ) connected to rt pin . m
AM4964 document number: ds37241 r ev. 2 - 2 16 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product applications note (cont.) speed control and minimum speed setting minimum speed setting the minimum speed setting prevents the motor speed dropping below a set ting speed when the speed demand is too low (i.e. pwm voltage is closer to 3.6v) when the cf pin voltage is higher than the vmin voltage, the vmin vol tage is compared with the internal triangular wave to generate the output pwm duty. therefore, setting the vmin to certain fixed voltage forces the vmin to c on trol the speed even when the cf voltage is higher. if vmin setting is not used or application does not need to set the minimum speed, connect the vmin to cf directly. rotor lock detect and off t me setting the capacitor c4 from ct pin to the ground provides the timing for the lock detect and auto - restart. the capacitor c4 is charges and discharged by the ct pin at a fixed rate depending on the mode of operation (fan operation status) and therefore the value of the c4 to giv es lock - detect time (t lckde t ) and lock time (t off ) before next auto - start retry. the AM4964 return s the c4 voltage to the low threshold, v ctl (1.7 7 v), each time the hall sensor provides the commutation signal. c4 is charged with i chg which is typically 2 a. if the voltage on the c4 reaches the high threshold, v cth (3.7v) before the next hall signal change, the output will be shut down and the device will enter lock condition. c det cth ct chg the thresholds voltage and charge current are fixed, therefore the t lckdet time depends only on the value of c4. c det for c4 of 0.47 f, t lckdet is 0.47s . a d j u s t a b l e v o l t a g e f p w m = 2 5 k h z l o w s p e e d p w m v a r i a b l e h i g h s p e e d v m i n v h = 3 . 6 v v l = 2 . 0 v a l l p a r a m e t e r s a r e t e s t e d u n d e r v c c = 1 2 v v c f ( t t l ) v c f ( t t h ) f g o u t p u t ( t t l ) f g o u t p u t ( t t h )
AM4964 document number: ds37241 r ev. 2 - 2 17 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product applications note ( c ont.) if lock detection causes device to enter output shutdown, the ct pin will discharge the c4 capacitor with i dhg provide t off period. the t off is the time the device waits before next auto - restart. during t off p eriod, the c4 is discharged for the high threshold, v cth to low threshold v ctl at the discharge current i dhg which is typically 0.2 a. off cth ct chg the thresholds voltage and discharge current are fixed, therefore the t off time depends only on the value of c4. off for ct of 0.4 s, t off is 4.7s before the next auto restart. thermal shutdown AM4964 includes a thermal shutdown function. w hen the device junction temperature is higher than + 176 oc typical, the thermal shutdown function is triggered and the low side output transistors in h bridge driver will be turned off. when the ic junction temperature drops below + 148 oc typical, the device will recover . status output - fg o utput the fg output pin is an open collector output which switches on (pulled low) and off (pulled high with an external resistor) depending on the magnetic phase of the motor. the external pull up resistor should be connected to the fg pin. the fg pin h a s series resisto r s of 25 typical integrated in the fg outpu t structure t o increased robustness against reverse supply connection of the fg t o ground . the typical value for external pull - up on fg is 10k ? .
AM4964 document number: ds37241 r ev. 2 - 2 18 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product ordering information diodes ics pb - free products with "g1" suffix in the part number, are rohs compliant and green . package temperature range part number marking id packing tssop - 20ep - 30 to + 90 ? c AM4964gtr - g1 AM4964gg 4000 / tape & reel mark ing informatio n (top view) part number package marking id AM4964 gtr - g1 tssop - 20ep AM4964 gg am 4964 gg ywwaxx first and second lines: logo and marking id third l ine: date code y: year 0 to 9 ww: week 00 to 52 (work w eek of m olding) a: assembly house code xx: 7 th and 8 th d igits: batch no . a m 4 9 6 4 x x x C p a c k i n g t r : t a p e & r e e l g 1 : g r e e n p r o d u c t n a m e r o h s / g r e e n p a c k a g e g : t s s o p - 2 0 e p
AM4964 document number: ds37241 r ev. 2 - 2 19 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product package outline dimensions (all dimensions in mm (inch) .) (1) package type: tssop - 20 ep 0 . 6 5 0 ( 0 . 0 2 6 ) t y p 6 . 2 0 0 ( 0 . 2 4 4 ) 6 . 6 0 0 ( 0 . 2 6 0 ) # 1 p i n 6 . 4 0 0 ( 0 . 2 5 2 ) 6 . 6 0 0 ( 0 . 2 6 0 ) i n d e x 0 . 7 5 0 ( 0 . 0 3 0 ) 0 . 8 5 0 ( 0 . 0 3 3 ) d p 0 . 0 0 0 ( 0 . 0 0 0 ) 0 . 1 0 0 ( 0 . 0 0 4 ) 2 . 9 0 0 ( 0 . 1 1 4 ) 3 . 1 0 0 ( 0 . 1 2 2 ) 4 . 1 0 0 ( 0 . 1 6 1 ) 4 . 3 0 0 ( 0 . 1 6 9 ) 0 . 2 0 0 ( 0 . 0 0 8 ) 0 . 2 8 0 ( 0 . 0 1 1 ) 0 . 0 5 0 ( 0 . 0 0 2 ) 0 . 1 5 0 ( 0 . 0 0 6 ) 0 . 8 0 0 ( 0 . 0 3 1 ) 1 . 0 5 0 ( 0 . 0 4 1 ) 1 . 2 0 0 ( 0 . 0 4 7 ) m a x 0 . 3 4 0 ( 0 . 0 1 3 ) 0 . 5 4 0 ( 0 . 0 2 1 ) 1 0 1 4 0 . 2 5 0 ( 0 . 0 1 0 ) t y p 0 . 4 5 0 ( 0 . 0 1 8 ) 0 . 7 5 0 ( 0 . 0 3 0 ) 1 . 0 0 0 ( 0 . 0 3 9 ) r e f 0 8 r 0 . 0 9 0 ( 0 . 0 0 4 ) m i n r 0 . 0 9 0 ( 0 . 0 0 4 ) m i n t o p & b o t t o m 4 - 0 . 2 0 0 ( 0 . 0 0 8 ) m i n 4 . 3 0 0 ( 0 . 1 6 9 ) 4 . 5 0 0 ( 0 . 1 7 7 ) 0 . 1 0 0 ( 0 . 0 0 4 ) 0 . 1 9 0 ( 0 . 0 0 7 ) e x p o s e d p a d n o t e : e j e c t h o l e , o r i e n t e d h o l e a n d m o l d m a r k i s o p t i o n a l .
AM4964 document number: ds37241 r ev. 2 - 2 20 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product suggested pad layout (1) package type: tssop - 20 ep dimensions z (mm)/(inch) g (mm)/(inch) x (mm)/(inch) y (mm)/(inch) value 7.720/0.304 4.160/0.164 0.420/0.017 1.780/0.070 dimensions e (mm)/(inch) x1 (mm)/(inch) y1 (mm)/(inch) C value 0.650/0.026 4.500/0.177 3.300/0.130 C x 1 z g y 1 e x y
AM4964 document number: ds37241 r ev. 2 - 2 21 of 21 www.diodes.com june 2014 ? diodes incorporated AM4964 a product line of diodes incorporated new product important notice diodes incorporated makes no warranty of any kind, express or implied, with regards to this document, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose (and their equivalents under the laws of any jurisdiction). diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. diodes incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does diodes incorporated convey any license unde r its patent or trademark rights, nor the rights of others. any customer or user of t his document or products described herein in such applications shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on diodes incorporated website, harmless against all damages. diodes incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthor ized sales channel. should customers purchase or use diodes incorporated products for any unintended or unauthorized application , customers shall indemnify and hold diodes incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arisin g out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. products described herein may be covered by one or more united states, international or foreign patents pending. product nam es and markings noted herein may also be covered by one or more united states, international or fore ign trademarks. this document is written in english but may be translated into multiple languages for reference. only the english version of this document is the final and determinative format released by diodes incorporated. life support diodes incorp orated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the chief executive officer of diodes incorporated. as used herein: a. life support devices or syst ems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided i n the labeling can be reasonably expected to result in significant injury to the user. b. a critical component is any component in a life support device or system whose failure to perform can be reasonably expe cted to cause the failure of the life support device or to affect its safety or effectiveness. customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support d evices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safe ty - related requirements concerning their products and any use of diodes incorporated products in such safety - critical, life support devices or systems, notwithstanding any devices - or systems - related information or support that may be provided by diodes in corporated. further, customers must fully indemnify diodes incorporated and its representatives against any damages arising out of the use of diodes incorporated products in such safety - critical, life support devices or systems. copyright ? 201 4 , diodes incorporated www.diodes.com

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